Welcome to Teak Publishing's Shortwave Central blog. This blog covers shortwave frequency updates, loggings, free radio, international mediumwave, DX tips, clandestine radio, and late-breaking radio news. Visit my YouTube and Twitter links. Content on Shortwave Central is copyright © 2006-2024 by Teak Publishing, which is solely responsible for the content. All rights reserved. Redistribution of these pages in any format without permission is strictly prohibited.
Pages
▼
Tuesday, November 22, 2016
Weekly Propagation Forecast Bulletins
Product: Weekly Highlights and Forecasts
:Issued: 2016 Nov 21 0507 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact http://www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 14 - 20 November 2016
Solar activity was very low through the period with only a few low-level B-class flares observed from Regions 2610 (N16, L=018, class/area Dao/050 on 17 November), and 2611 (N03, L=291, class/area Cao/020 on 18 November). No Earth-directed coronal mass ejections (CME) were observed in available satellite imagery during the reporting period. No proton events were observed at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels throughout the period (14-20 November). The maximum flux of 19,442 pfu was observed at 15/1530 UTC.
Geomagnetic field activity was at quiet to unsettled levels on 14-15 November in response to waning influence from a negative polarity coronal hole high speed stream (CH HSS). Solar wind speed steadily decreased from a peak of 681 km/s to period ending values below 400 km/s. Total field ranged between 1 and 7 nT while the Bz component reached a maximum southward deviation of -6 nT. Quiet conditions were observed on 16-20 November under an ambient solar wind environment.
Forecast of Solar and Geomagnetic Activity 21 November - 17 December 2016
Solar activity is expected to be at very low levels with a slight chance for C-class flares over the forecast period. No proton events are expected at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at normal to moderate levels with high levels likely on 22 November - 07 December, and 10-17 December due to recurrent CH HSS influence.
Geomagnetic field activity is expected to be at unsettled to active levels on 21-29 November and 07-11 December, with G1 (Minor) geomagnetic storm levels likely on 22-24 November, due to recurrent CH HSS effects.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2016 Nov 21 0507 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact http://www.swpc.noaa.gov/wwire.html#
# 27-day Space Weather Outlook Table
# Issued 2016-11-21
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2016 Nov 21 75 8 3
2016 Nov 22 78 20 5
2016 Nov 23 80 35 5
2016 Nov 24 80 30 5
2016 Nov 25 80 20 4
2016 Nov 26 82 12 4
2016 Nov 27 82 10 3
2016 Nov 28 82 8 3
2016 Nov 29 82 8 3
2016 Nov 30 82 5 2
2016 Dec 01 82 5 2
2016 Dec 02 84 5 2
2016 Dec 03 84 5 2
2016 Dec 04 84 5 2
2016 Dec 05 80 5 2
2016 Dec 06 80 5 2
2016 Dec 07 80 15 4
2016 Dec 08 78 12 4
2016 Dec 09 76 18 4
2016 Dec 10 76 20 4
2016 Dec 11 76 10 3
2016 Dec 12 76 5 2
2016 Dec 13 76 5 2
2016 Dec 14 76 5 2
2016 Dec 15 75 5 2
2016 Dec 16 75 5 2
2016 Dec 17 75 5 2
(NOAA)